Circular extension-table



(do Model.) 2 Sheets-Sheet 1.

G; KRUEGER. CIRCULAR EXTENSION TABLE.

10.572,172. y Patented Dec. 1, 1896.

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(No Model.) 2 Sheets-Sheet 2.

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CIRCULAR EXTENSION TABLE. I

No. 572,172. Patented Deo. 1, 1896.

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UNITED STATES PATENT OEEICE.v

GEORGE KRUEGER, OF ALBANY, NEIV YORK.

CIRCULAR EXTENSION-TABLE.

SPECIFICATION forming part of Letters Patent N o. 572,172, datedDecember 1, 1896.

Application led September 2, 1893. Serial No. 484,608. (No model.)

To all whom t may concern:

Beit known that I, GEORGE KRUEGER, a citizen of the United States,residing at Albany, in the county of Albany and State of New York, haveinvented certain new and useful Improvements in Circular Extension-Tables; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to circular extensiontables; and it consists of thecombination of devices and parts hereinafter described, and set forth inthe claim.

The objects of my invention are, rst, to provide a table in which itstop platform may at will be extended from its original diameter in alldirections to one or more gi'ven larger diameters; second, to provide ina table which may have its top platform extended in its diameter allaround simple means by which the extendable parts may be securely heldwith the fixed parts and be capable of being moved laterally in eitherdirection and be firmly supported in their horizontal positions, and,further, to provide certain combinations of devices or elements by whichmy improvements may be embodied in extension-tables. I attain theseobjects by the means illustrated in the accompanying drawings, forming apart of this specification, in which- Figure l is a plan view of theframework of an extension-table embodying my improvements and the movingparts of the table, with the stationary table-top removed and indicatedby broken dotted lines and illustrating the manner in which the movingparts operate, and showing by broken and dotted lines extension-leavesin place for enlarging the table. Fig. 2 is an elevation of the table,with part in section, taken at line l l. Fig. is a cross-sectional viewtaken at line 2 2 in Fig. l. Fig. 4t is a cross-sectional View taken atdotted line 3 3 in Fig. l, and Fig. 5 is a view of the joined edges oftwo leaves.

The same letters of reference refer to similar parts throughout theseveral views.

In the drawings, A is the stationary tabletop. 4 and indicated by brokenand dotted lines in Fig. l.) This stationary table-top may be (Shown byfull lines in Figs. 2, 3, and' made of any suitable material and with asquare, polygonal, oval, or round form.

B B is the frame of the table, which frame is composed of thecircumferential outer rail b Z), preferably formed of sections, and theparallel cross-bars b b and b2 b2, formed, arranged in pairs, andsecured with said circumferential rail-sections b and with each other ashereinafter particularly described.

C is the central supporting-leg, which is securely fixed by any suitablemeans to this frame at the place of union of the bars b b with bars b2b2 for holding the central portion of the frame from sagging and forholding with the floor when the horizontal extension parts are beingmoved.

In Fig. 1 the outer rails b of this frame B are shown to be curved inform, so that unitedly they form a circle. The'cross-bars b' b and b2 b2are arranged in pairs, with each bar of a pair parallel with the other,as shown, and having their outer ends secured to the outer rails b b atabout their middle of length and preferably by dovetail joints. Thesecross-bars b' b' and b2 b2 in each parallel pair in the frame cross eachother, with the bars b b of one pair crossing the bars b2 b2 of theother, as shown in Figs. I and 2. These parallel cross-bars b b and b2b2 have formed in their inner sides suitable guiding elements whichconsist, in each bar, of a longitudinal groove c and a coactinglongitudinal tongue c.

D D are radially-sliding bar-form brackets which are arranged betweenbars Z9 b and 172122 and are each preferably supported by a leg C',secured therewith, as indicated by dotted lines in Fig. l and shown byfull lines in Fig. 2. These brackets D have provided with their sides,neighboring said bars b and b2, guiding elements for coaction with theguiding elements c for holding with the samewhen said sliding bracketsare being moved radially outward for support of loose eXtension topleaves A A. (Shown by full lines in Fig. 2 and indicated by dotted linesin Fig. l.) The said guiding elements provided in the saidradially-sliding brackets D D are made in the form of longitudinalgrooves c2 c2 for coaction with the longitudinal tongues c provided withthe bars b b2, as shown by full lines in Figs. 2, 3, and 4 and indicatedby dotted lines in Fig. 1. These radially-sliding IOO bars each comprisea pair of parallel bars d d, suitably secured together to operatesubstantially as a unit and as a sliding bracket having a centralopening O, within which a single sliding bar D works in eitherdirection, as indicated by arrows in Fig. l.

The parallel cross-bars b' b' are shown to be on a plane above theparallel cross-bars h2 b2 and to cross the same at about the center ofthe framework of the table and directly over the central leg C. Thesliding brackets D D, each composed of two parallel bars d cl, are shownin Fig. l to be of length about equal to the cross-bars b' b and b2 b2,between which these double-bar brackets D D work, and the single-barbracket D, working in the opening O between the bars d d of thedouble-bar bracket D, is also shown to be of a length about equal tothat of the said double-bar brackets D, within which the single barbrackets work; and these single-bar brackets are shown to be providedwith guide elements, preferably in the form of tongues e e, working inthe guiding elements consisting` of grooves e' e', provided in the innersides of the bars d d of the double-bar brackets D D. In

the form of construction shown the double bar sliding brackets D D areguided in their movements and held secure in place between thecross-bars b' h and b2 b2, while the singlebar brackets D are guided intheirmovements and held secure in place between the two bars composingthe double-bar sliding brackets D D, within which the said single-barbrackets D may move.

In the edges of the stationary table-top A all around is provided thegroove s, Fig. 2, which groove s is made with a depth and widthcorresponding with the tongues s', provided on the inner edges of theextensionleaf A' of the table when they are placed in position on theextension-brackets D. (Shown by full lines in Fig. 2 and indicated bydotted lines in Fig. l.) These tongues s', made with the inner edges ofthe extension-leaves A', coact with the groove s, provided all around inthe circumferential edge of the table-top A to hold the said leaves fromtilting. i One end of each extension-leaf A' is provided\with a tongues2, while the opposite end is provided with a coacting groove S3. ,i(Shown by full lines in Fig. 5.) These tongues s2 and grooves on theends of the extension-leaves A' A' cooperate with the extended bracketsD D, grooves s of the table edge, and tongues S' of the inner edges ofsaid extension-leaves for holding the leaves suitably joined with thetable and from tilting in any direction.

Any suitable locking device H maybe employed for holding the joined,tongued, and grooved end edges of the neighboring eXtension-leaves A'tightly drawn together, and these locking devices II may be in the formof a hooked catch h, pivoted to one of the leaves A' from its lower sideby pivot h' and holding with a stationary catch h2, secured to theneighboring leaf A' and to its lower side, as shown in Fig. 5.

In tables where the extension of the diameter of the top may be varied,as from iive feet diameter to eight or nine or more feet diameter, thetable is preferably provided with a stationary leg C, secured to theframe B at its center, as indicated by dotted lines in Fig. l and shownby full lines in Figs. 2, 3, and 4, and with legs C C', secured eachwith an extension-bracket D, so as to be carried outward from thestationary center leg C proportonately as the brackets D are extendedpreparatory to placing the extension-leaves A' A' in place on the saidextensionbrackets and around the stationary table-top A. (Shown bydotted lines in Figs. l and 2 and by full lines in Fig. 2.)

The extension all around of the table-top may be made by a singlecircular row of narrow or wide leaves A' A', as may be preferred, andwhen the extension is to be from eighteen inches to thirty-six inchesall around two rows of narrow leaves A' A' may be employed, as indicatedby dotted lines in Fig. l.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s-

In a circular extension-table, the combination with the frame B,comprising the circumferential rail b, parallel bars b' b', providedwith guiding elements described, parallel bars b2 h2 on a plane belowthe bars b' b', and provided also with guiding elements as described andcrossing bars b' b at the middle of their length, one or more legspermanently iixed t-o said frame, and table-top A, securely fixed to thesaid parts comprising said frame B, radially-moving brackets D, workingthrough openings provided in the circumferential rail b and providedwith guid- IOC ing elements described for coaction with the GEORGEKRUEGER.

lVitnesses:

ALEX. SELKIRK, A. SELKIRK, Jr.

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